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| Deflection is the
amount of bend, or "give" a structure experiences because
of a load. In non load-bearing walls, this vertical
movement can be caused by a number of reasons (snow load,
seismic activity, occupancy) which will damage walls if not
accounted for. Typically this
deflection or head of wall is compensated for with special
track, which can be very expensive. The Trakloc®
Steel Framing system accounts for deflection with its stud
assembly, or TSD (Trakloc Stud®
- Deflection). This TSD is similar to
our TSA (Trakloc® Stud
Assembly), except that the extension insert has slots cut
out of the flange's which allows the drywall screw to pass
through the drywall and the outer portion of our stud
while passing through the slot. This slot allows for
the wall to deflect, without damaging the drywall.
It is not only simple, but extremely
cost effective, since no special track must be purchased. |
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Lets start by illustrating some of the
elements which make up a Trakloc® Stud, as we
further illustrate the efficiency. |
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A Trakloc® Stud is comprised
of a TSO (Trakloc® Stud, Open Ended) and a TSE
(Trakloc® Stud Extension) |
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The Trakloc® system then
offers two types of TSE's. The standard TSE, and a
TSE with two slots (3" x 3/4") cut into each of the
flanges, which is called a deflection insert. When
the deflection insert is combined with a TSO, it becomes a
TSD (Trakloc® Stud, w/Deflection) |
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It is through these slots which the
screw holding the drywall passes. The screw makes a
positive connection to the drywall as well as a positive
connection to the TSO, but by passing through the slot,
allowing for +/- 1/2" of movement by the TSE, thereby
allowing for wall deflection. |
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Because of the relationship between
this slot, and the top of the drywall, it should be noted
that when deflection inserts are used the amount of stud
length variability is limited to 2", which is still enough
to allow for most deck height variances. |
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Trakloc®
Deflection Insert |
Trakloc®
Deflection Stud Assembly |
| The extension ... |
The
assembly, with the extension inserted ... |
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| This is how the Trakloc®
Stud w/Deflection (TSD) provides for up to
1-inch (+/- 1/2") of deflection without the need for
deep leg or slotted track |
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| The slotted extension
component allows for vertical head-of-wall movement of up
to 1-inch total using only Trakloc's® standard track (TTS) |
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APPROVALS FOR HEAD-OF
WALL |
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Design listings under ASTM
E-1966-01, Test Method for Fire-Resistant Joint systems with
Intertek Testing Service (Design listings CEJ 480 H, CEJ 481 H
and CEJ 482 H). |
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View Design Listings
Here ... |
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CEJ
480 H |
CEJ
481 H |
CEJ
482 H |
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Deflection Assembly
Diagram |
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The Trakloc®
Steel Framing system is covered by US and International patent
and patents pending. |
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Return to Technical Information Directory |
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Trakloc Midwest, LLC |
| 6500
W. Calumet Rd. |
|
Milwaukee, WI 53223 |
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(414) 354-1000 - Office |
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(414) 354-5002 - Fax |
| 1
866-502-2020 - Toll Free |
| ©
2005-2009 Trakloc Midwest, LLC |
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